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| Mirrors > Home > MPE Home > Th. List > Mathboxes > islan2 | Structured version Visualization version GIF version | ||
| Description: A left Kan extension is a universal pair. (Contributed by Zhi Wang, 4-Nov-2025.) |
| Ref | Expression |
|---|---|
| islan.r | ⊢ 𝑅 = (𝐷 FuncCat 𝐸) |
| islan.s | ⊢ 𝑆 = (𝐶 FuncCat 𝐸) |
| islan.k | ⊢ 𝐾 = (〈𝐷, 𝐸〉 −∘F 𝐹) |
| Ref | Expression |
|---|---|
| islan2 | ⊢ (𝐿(𝐹(〈𝐶, 𝐷〉 Lan 𝐸)𝑋)𝐴 → 𝐿(𝐾(𝑅 UP 𝑆)𝑋)𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | islan.r | . . 3 ⊢ 𝑅 = (𝐷 FuncCat 𝐸) | |
| 2 | islan.s | . . 3 ⊢ 𝑆 = (𝐶 FuncCat 𝐸) | |
| 3 | islan.k | . . 3 ⊢ 𝐾 = (〈𝐷, 𝐸〉 −∘F 𝐹) | |
| 4 | 1, 2, 3 | islan 50199 | . 2 ⊢ (〈𝐿, 𝐴〉 ∈ (𝐹(〈𝐶, 𝐷〉 Lan 𝐸)𝑋) → 〈𝐿, 𝐴〉 ∈ (𝐾(𝑅 UP 𝑆)𝑋)) |
| 5 | df-br 5100 | . 2 ⊢ (𝐿(𝐹(〈𝐶, 𝐷〉 Lan 𝐸)𝑋)𝐴 ↔ 〈𝐿, 𝐴〉 ∈ (𝐹(〈𝐶, 𝐷〉 Lan 𝐸)𝑋)) | |
| 6 | df-br 5100 | . 2 ⊢ (𝐿(𝐾(𝑅 UP 𝑆)𝑋)𝐴 ↔ 〈𝐿, 𝐴〉 ∈ (𝐾(𝑅 UP 𝑆)𝑋)) | |
| 7 | 4, 5, 6 | 3imtr4i 294 | 1 ⊢ (𝐿(𝐹(〈𝐶, 𝐷〉 Lan 𝐸)𝑋)𝐴 → 𝐿(𝐾(𝑅 UP 𝑆)𝑋)𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1559 ∈ wcel 2141 〈cop 4587 class class class wbr 5099 (class class class)co 7390 FuncCat cfuc 17959 UP cup 49747 −∘F cprcof 49947 Lan clan 50179 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-rep 5226 ax-sep 5245 ax-nul 5255 ax-pow 5321 ax-pr 5389 ax-un 7712 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3076 df-rex 3086 df-reu 3367 df-rab 3414 df-v 3455 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-iun 4950 df-br 5100 df-opab 5162 df-mpt 5181 df-id 5540 df-xp 5651 df-rel 5652 df-cnv 5653 df-co 5654 df-dm 5655 df-rn 5656 df-res 5657 df-ima 5658 df-iota 6471 df-fun 6517 df-fn 6518 df-f 6519 df-f1 6520 df-fo 6521 df-f1o 6522 df-fv 6523 df-ov 7393 df-oprab 7394 df-mpo 7395 df-1st 7964 df-2nd 7965 df-func 17872 df-lan 50181 |
| This theorem is referenced by: lanrcl5 50209 |
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